Combination wrench is made from CR-V (chromium-vanadium) steel and is fully heat treated to provide exceptional hardness, strength, toughness and durability, making it highly resistant to wear and deformation. Wrench surface is chrome-plated to prevent rust and corrosion, ensuring a long service life. The surface is smooth and feels comfortable.The wrench combines the functions of a 12-point ratcheting box end wrench and an open-end wrench. Open end provides easier access in tight spaces, while box end allows for higher torque application. 12-point design grips the fastener from all sides, providing more points of contact. It also can distribute forces in the radius rather than the corner, extending life and protecting fasteners.
eBay